Move setup/teardown out of tests

package.json

@@ -6,7 +6,7 @@
     "node": "10.15.3"
   },
   "scripts": {
-    "test": "gulp lint && jest tests/javascripts",
+    "test": "gulp lint && jest --config tests/javascripts/jest.config.js tests/javascripts",
     "build": "gulp",
     "watch": "gulp watch"
   },

tests/javascripts/autofocus.test.js

@@ -1,18 +1,9 @@
 beforeAll(() => {
-  // set up jQuery
-  window.jQuery = require('jquery');
-  $ = window.jQuery;
-
-  // load module code
-  require('govuk_frontend_toolkit/javascripts/govuk/modules.js');
   require('../../app/assets/javascripts/autofocus.js');
 });
 
 afterAll(() => {
-  window.jQuery = null;
-  $ = null;
-
-  delete window.GOVUK;
+  require('./support/teardown.js');
 });
 
 describe('Autofocus', () => {

tests/javascripts/collapsibleCheckboxes.test.js

@@ -1,13 +1,6 @@
 const helpers = require('./support/helpers');
 
 beforeAll(() => {
-  // set up jQuery
-  window.jQuery = require('jquery');
-  $ = window.jQuery;
-
-  // load module code
-  require('govuk_frontend_toolkit/javascripts/govuk/modules.js');
-
   // TODO: remove this when tests for sticky JS are written
   require('../../app/assets/javascripts/stick-to-window-when-scrolling.js');
 
@@ -15,10 +8,7 @@ beforeAll(() => {
 });
 
 afterAll(() => {
-  window.jQuery = null;
-  $ = null;
-
-  delete window.GOVUK;
+  require('./support/teardown.js');
 });
 
 

tests/javascripts/fullscreenTable.test.js

@@ -1,20 +1,11 @@
 const helpers = require('./support/helpers');
 
 beforeAll(() => {
-  // set up jQuery
-  window.jQuery = require('jquery');
-  $ = window.jQuery;
-
-  // load module code
-  require('govuk_frontend_toolkit/javascripts/govuk/modules.js');
   require('../../app/assets/javascripts/fullscreenTable.js');
 });
 
 afterAll(() => {
-  window.jQuery = null;
-  $ = null;
-
-  delete window.GOVUK;
+  require('./support/teardown.js');
 });
 
 describe('FullscreenTable', () => {

tests/javascripts/jest.config.js

@@ -0,0 +1,3 @@
+module.exports = {
+  setupFiles: ['./support/setup.js']
+}

tests/javascripts/listEntry.test.js

@@ -1,19 +1,11 @@
 beforeAll(() => {
-  // set up jQuery & HoganJS
-  window.jQuery = require('jquery');
-  $ = window.jQuery;
   Hogan = require('hogan.js');
 
-  // load module code
-  require('govuk_frontend_toolkit/javascripts/govuk/modules.js');
   require('../../app/assets/javascripts/listEntry.js');
 });
 
 afterAll(() => {
-  window.jQuery = null;
-  $ = null;
-
-  delete window.GOVUK;
+  require('./support/teardown.js');
 });
 
 describe("List entry", () => {

tests/javascripts/support/setup.js

@@ -0,0 +1,6 @@
+// set up jQuery
+window.jQuery = require('jquery');
+$ = window.jQuery;
+
+// load module code
+require('govuk_frontend_toolkit/javascripts/govuk/modules.js');

tests/javascripts/support/teardown.js

@@ -0,0 +1,4 @@
+window.jQuery = null;
+$ = null;
+
+delete window.GOVUK;